High MERV filters (typically MERV 13 and above) can be bad for your traditional AC unit. While they excel at trapping microscopic particles, their dense material can severely restrict airflow. This forces the AC system to work much harder, which can reduce energy efficiency, cause the evaporator coils to freeze over, or even damage the compressor.
For most modern, properly-sized systems, MERV 11 is not too high. It is an excellent "sweet spot" that filters out pet dander, mold spores, and smoke without overly restricting airflow, provided you check it regularly and your system uses thicker filters.
The Rule of 5000 Rule is simple: Multiply the cost of the needed repair by the age of your air conditioner. If the result is greater than 5000, AC replacement is generally the smarter choice. If it's less than 5000, a repair might still be worth the investment.
A higher MERV rating means the filter traps smaller particles. For allergy and asthma sufferers, filters with a MERV rating of 8-13 are generally recommended. Filters with a MERV rating of 14-16 are considered hospital grade.
Filters with a MERV rating of 8-13 are usually higher-end filters for home use or high-quality commercial filters. These filters are typically the right choice for use in homes and many businesses.
While higher MERV ratings are effective at capturing smaller particles, they also create more resistance. This can lead to reduced airflow and potential damage to your HVAC system.
A MERV 14 or higher air filter can create more resistance in airflow than a residential HVAC system is designed to handle. This reduction in the air flow to your HVAC system can worsen the air quality in your home, as well as put too much pressure on your AC system.
Hospitals generally require air filters with a MERV (Minimum Efficiency Reporting Value) rating of 13 to 16 for general areas, while critical spaces utilize even higher filtration levels.
The "Rule of Two" is a simple guideline used to determine if your asthma is well-controlled. If you answer yes to any of the following criteria, your asthma may require better management, and you should consult a healthcare provider:
Air conditioners can create a better environment for asthma sufferers. Here's how they make a difference: Reduce Allergens: AC units filter out pollen, dust, and pet dander, which are common asthma triggers. Lower Humidity: High humidity can promote mold and dust mites.
The 3-minute rule is a simple but important guideline: wait at least three minutes after turning your air conditioner off before turning it back on. That short pause gives the refrigerant pressure in the system time to equalize.
Many Amish homes are built with plenty of windows to help circulate the air and bring in the cooler overnight temperatures. They open the windows on the top floors to help the heat escape while the family retreats to the lower grounds within their homes for comfort.
Top-tier brands like Trane, Carrier, and Lennox historically last the longest. With proper, routine maintenance, central air conditioning units from these manufacturers consistently hit the 15 to 20-year mark.
Yes, you can use a MERV 11 filter in most homes, as it is excellent for capturing pet dander, pollen, and smog. However, because it is denser than standard filters, it may restrict airflow. Check your HVAC manual to ensure your system can handle a MERV 11 rating.
Yes, a MERV 10 filter is "better" at cleaning the air because it traps smaller particles (like fine dust and pet dander) than a MERV 8. However, it is slightly more restrictive, so it may not be better for older or more sensitive HVAC systems.
A MERV 13 filter can potentially strain or damage your furnace. While these filters trap microscopic allergens, their dense material can severely restrict airflow, leading to a burned-out blower motor or a cracked heat exchanger.
Asthma triggers are substances or conditions that irritate your airways and cause symptoms like wheezing, coughing, and shortness of breath. Common triggers include airborne allergens (like pollen and pet dander), respiratory infections, inhaled irritants (smoke and pollution), cold air, and high stress.
Relying on blue inhalers alone can increase the risk of serious attacks. These newer treatments address the root cause of asthma and are helping patients achieve better control and fewer emergencies. This is a life-saving cultural shift in asthma care.
The asthma "4-4-4" rule (or 4x4x4 method) is a standard emergency first-aid protocol used to treat an asthma attack. It involves administering a reliever inhaler in controlled stages while waiting for symptoms to improve.
It depends on the HVAC system's capacity and design. MERV 11 filters capture smaller particles than lower-rated filters, which can slightly reduce airflow if the system isn't optimized for higher filtration levels. However, most modern residential systems can handle MERV 11 without significant issues.
Yes, higher MERV filters are denser and generally restrict airflow more than lower MERV filters. Because they trap smaller particles, they create more resistance (or static pressure), which can force your HVAC system to work harder to circulate air.
What kind of filter should I use in my home HVAC system to help protect my family from COVID-19? Minimum Efficiency Reporting Values, or MERV, reports a filter's ability to capture particles. Filters with MERV-13 or higher ratings can trap smaller particles, including viruses.
Yes, more expensive air filters filter out smaller particles, but they are not always better for your home or car. While they capture more allergens, they can restrict airflow, causing your system to work harder, consume more energy, and potentially suffer costly mechanical damage.
No, you should not use a 20x25x4 filter in a slot designed for a 20x25x5 filter.
If your HVAC system has to work harder to push air through a more restrictive filter, it could lead to increased energy consumption and potential wear and tear. A MERV 11 filter may be more restrictive than a MERV 8, but how much it affects your system depends on its initial design and capacity.